Update git submodules

* Update docs/submodules/externalapi/nbi.git from branch 'master'
  to ca20793652dc0df6c25cdde9e2bbe007c0efebbe
  - Add index html and update remaining swagger for NBI
    Issue-ID: EXTAPI-402
    Signed-off-by: aosull01 <adrian.osullivan@huawei.com>
    Change-Id: I5746fd31f14c106bb85983af987ef0e71910e20d
    
1 file changed